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Dimer Acceptor Adop...
Dimer Acceptor Adopting a Flexible Linker for Efficient and Durable Organic Solar Cells
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- Qi, Feng (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Li, Yanxun (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Zhang, Rui (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Lin, Francis R. R. (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Liu, Kaikai (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Fan, Qunping (författare)
- Xi An Jiao Tong Univ, Peoples R China
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- Jen, Alex K. -Y. (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China; Univ Washington, WA 98195 USA; City Univ Hong Kong, Peoples R China
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(creator_code:org_t)
- 2023-03-22
- 2023
- Engelska.
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Ingår i: Angewandte Chemie International Edition. - : WILEY-V C H VERLAG GMBH. - 1433-7851 .- 1521-3773. ; 62:21
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Organic solar cells (OSCs) have advanced rapidly due to the development of new photovoltaic materials. However, the long-term stability of OSCs still poses a severe challenge for their commercial deployment. To address this issue, a dimer acceptor (dT9TBO) with flexible linker is developed for incorporation into small-molecule acceptors to form molecular alloy with enhanced intermolecular packing and suppressed molecular diffusion to stabilize active layer morphology. Consequently, the PM6 : Y6 : dT9TBO-based device displays an improved power conversion efficiency (PCE) of 18.41 % with excellent thermal stability and negligible decay after being aged at 65 degrees C for 1800 h. Moreover, the PM6 : Y6 : dT9TBO-based flexible OSC also exhibits excellent mechanical durability, maintaining 95 % of its initial PCE after being bended repetitively for 1500 cycles. This work provides a simple and effective way to fine-tune the molecular packing with stabilized morphology to overcome the trade-off between OSC efficiency and stability.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Dimer Acceptor; Flexible Linker; Mechanical Performance; Solar Cells; Stability
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